The Energy Storage and Management Unit installation programme is to schedule with the 25 units on track to be installed by July 2015 as per the SDRC. The commissioning of the installed units remains a risk until the full commissioning programme, combining the remedial actions on the ABB inverters has been scheduled with the ESMU supplier and ABB engineers

Appears the ESMU and the inverters need to work together so interfacing has to happen. They must talk to each other..